Check site security

Serving your site over HTTPS is fundamental for security, and many APIs won't work without it. If
you need to justify implementation costs, find out why HTTPS
matters.

If a site uses HTTP for any assets, users will be warned in the URL bar. Chrome displays a warning
like the following.

From Chrome 68, the address bar warns if not all assets use HTTPS

HTTPS should be implemented everywhere — not just, for example, on login or checkout pages. Any
insecure page or asset can be a vector for attack, making your site a liability for your users and
your business.